a jet plane is traveling with a velocity of 720 kilometers/hour due north. there is a crosswind of 40 kilometers/hour from the east. find the resultant velocity and the direction of the jet plane.

721.1 km/h, at 86.6 degrees north of west

Explanation:

The magnitude of the velocity of the plane can be found by calculating the resultant of the two velocities:

The direction can be found as follows:

where 720 km/h represents the velocity towards north, while 40 km/h represents the velocity towards west, so the angle is measured with respect to east. Therefore:

the direction is north of west

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.